Flora of North America species comparison

simple from base, erect, (paniculately) branched beyond base or distally, 2–6 dm.

several from base, usually erect to ascending, rarely decumbent, branched, 0.4–1.5(–2) dm.

(soon withered, often before anthesis);

not rosulate;

blade dentate to pinnatifid.

(soon withered);

not rosulate;

petiole 0.5–1.5(–2) cm;

blade margins entire or pinnatifid (lobes 2–5 pairs, linear to filiform), 1.5–5 cm × 0.5–2 mm.

shortly petiolate to subsessile;

blade narrowly oblanceolate to linear, 1–3.3 cm × 1–4 mm, base attenuate, not auriculate, margins entire.

petiolate;

blade linear, 0.1–0.3 cm × 0.5–2 mm, base attenuate, not auriculate, margins entire.

(often paniculate), considerably elongated in fruit;

rachis glabrous or puberulent, trichomes straight, cylindrical.

considerably elongated, (lax) in fruit;

rachis glabrous or puberulent, trichomes straight, cylindrical.

sepals oblong, 0.7–0.8 × 0.3–0.4 mm;

petals (rudimentary), white, linear, 0.4–0.6 × 0.05–0.1 mm, claw absent;

stamens 4, median and lateral;

filaments 0.6–0.8 mm;

anthers ca. 0.2 mm.

sepals oblong, 0.6–0.8 × 0.4–0.5 mm;

petals absent;

stamens 4, median;

filaments 0.6–0.7;

anthers ca. 0.1 mm.

divaricate-ascending to horizontal, straight, (terete), 2–3.5 × 0.1–0.15 mm, puberulent adaxially.

divaricate to horizontal or descending, usually recurved, rarely straight, (terete or slightly flattened), 2–4(–6) × 0.2–0.3 mm, glabrous or puberulent adaxially.

orbicular to broadly elliptic, 1.8–2 × 1.7–1.8 mm, apically not winged, apical notch 0.05–0.1 mm deep;

valves thin, smooth, not veined, sparsely pilose;

style ca. 0.1 mm, equaling apical notch.

ovate, 2.4–3.6 × 1.8–2.5 mm, apically winged, apical notch (V-shaped), 0.3–0.8 mm deep;

valves thin, smooth, strongly reticulate-veined, glabrous;

style obsolete or to 0.1 mm, included in apical notch.

oblong, 1–1.2 × 0.7–0.8 mm.

oblong, 1.4–1.8 × 0.8–0.9 mm.